Milk testing cabinet



P 1940. w. WATERMANN ET AL 2,214,215

MILK TESTING CABINET Filed July 11, 1938 Z7onaZa/ Vfiz z erald By MM M1,

Aiiorneys Patented Sept. 10, 1940 earner MILK TESTING CABINETApplication July 11, 1938, Serial No. 218,712

2 Claims.

This invention relates to a cabinet for the testing of milk samples, thegeneral object of the invention being to provide an insulated cabinetcontaining a water tank and heating means for heating the water in thetank, with means for keeping the water at a constant temperature whilerunning Reducta-se tests to determine approximate bacteria counts in themilk.

This invention also consists in certain other features of constructionand in the combination and arrangement of the several parts to behereinafter fully described, illustrated in the accompanying drawing andspecifically pointed out in the appended claims.

In describing the invention in detail, reference will be had to theaccompanying drawing wherein like characters denote like orcorresponding parts throughout the several views, and in which:

Figure l is a perspective View of the cabinet.

Figure 2 is an end View thereof.

Figure 3 is a section on the line 33 of Figure 1.

In this drawing the body of the cabinet is shown at i and is supportedby the legs 2, the top of the body being open and a cover 3 is providedfor the body having one side portion thereof hinged to the body as shownat 4 and the opposite side is provided with a handle 5. A horizontalpartition 8 is located in the lower part of the body to provide a lowersmall chamber l and a large tank receiving chamber 8, the partitionbeing formed with the openings 9. One end of the small chamber '5 isformed with an opening it) covered by a door ll and this chamber lcontains electric heating means preferably consisting of the lamps l2,any desired number or" which can be used. These lamps are connected bythe conductors i3 which pass 40 through an opening M in the rear ofthebody to a source of supply and a thermostat E5 is attached to theunder face of the cover 3 and suitably connected with the circuit of thelamps for controlling said circuit. A tank H5 is located in the chamber8 and has its top open with its bottom extending over the openings 9 sothat the heat from the lamp will heat the water in the tank and thethermostat controlling the circuit of the lamps will maintain thetemperature of the water at a predetermined degree.

In using the device the test tubes, containing the samples of milk to betested are placed in 5 racks and are next placed in the tanks ofpreheated water, the water being held at a temperature of approximately93.5 degrees Fahrenheit for eight hours or approximately so. Iviethlynblue dye is placed in the tubes with the milk. 10

While the drawing shows the tank as removable this tank can be suitablyfastened in the cabinet, but in this case a faucet must be connectedwith the bottom of the tank to drain the water therefrom.

It is thought from the foregoing description that the advantages andnovel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction andin the combination and arrangement of the several parts provided thatsuch changes fall within the scope of the appended claims.

Having described the claimed as new is:

1. A testing device of the class described, comprising a rectangular incross section cabinet having an open top and a lid therefor, the cabinetand lid being insulated with heat resisting material, a horizontalpartition in said cabinet positioned to thereby divide the cabinet intoa relatvely deep upper compartment and a relatively shallow lowercompartment, said partition having one or more openings therein,electric heating means positioned directly under 35 said openings, atank adapted to occupy the space in said upper compartment its bottomcovering said openings, said tank adapted to be partially filled withliquid, a thermostat positioned within said tank and having anelectrical connection to said heating elements whereby the temperaturein said upper compartment is automatically controlled.

2. A device as recited in claim 1 including; said lower compartmenthaving an access openmg and a closure therefor.

WILBUR WATERIt LLNN. DONALD V. FITZGERALD.

invention, what is

